Twitter's chief executive Dick Costolo has enabled a feature on his Twitter
app meaning he can tracked in real time.

Investigative journalists at Quartz analysed the location data attached to tweets from Twitter chief executive Dick Costolo. The 'metadata' allowed them to map his movements across a week, showing his hectic schedule.

The public messages on Twitter all included the precise location they were sent from, showing he spent the weekend at his home in Corte Madera, California, following a week of meetings around the USA.

With Twitter's IPO planned for this week, Costolo may become the first CEO of a public company whose movements can be tracked in real time.

Costolo tweeted using his Twitter for iPhone app, where users can select whether or not to add a location to a tweet.

The app generally displays the location as a city or town, but Quartz was able to find the precise latitude and longitude through Twitter's API.

It can also be found by clicking on the city which appears under a geo-tagged tweet, which shows more precise location services collected from Wi-Fi and GPS services on Costolo's iPhone.

Costolo's tweets showed he spent the last week of October mainly in New York where it appeared he stayed at the Four Seasons hotel. On October 29 he was found in a meat-and-seafood restaurant called Elements, in Princeton, New Jersey.

He also travelled to Boston last week where he made things easier for his trackers by tweeting about the traffic as he left the city.

His most recent tweet was sent from Route 101 in San Francisco suggesting he was commuting into the city from his Marin County home.